Concrete sea-wall.



No. 891,966. PATENTED JUNE 30, 1908.

J. H. TROMANHAUSER. CONCRETE SEA WALL.

APPLICATION TILED 0GT.5. 1907.

lliTromanhauser.

concrete sea walls,

J'ESSE HERLIN TnoMANHAUsER, or MIu EAPoLIs', MINNESOTA.

CONCRETE SEA-WALL.

Specification of Letters Patent.

Application filed October 5, 1907. Serial No. 396,084.

Patented June 30, mos;

To all whom it may concern;

Be it known that 1, Jesse I;IERLIN TRO- MANIIAUSER, of the city of Minneapolis, in the State of Minnesota, one of the United States of America, architect, have invented certain new and useful Improvements in Concrete Sea -Walls, of which the following is the specification.

My invention'relates to improvements in and the object of the invention is to devise a simple construction of concrete wall which may be built in sections of an desired size and in a sheltered harbor and t en floated to its osition and sunk and it consists essentially o apontoon formed of outer longitudinal and connecting cross timbers suitably braced together and provided with a suitable flooring-outer longitudinal walls of concrete built u on the longitudinal timbers which form the base for the wall and cross connectin concrete walls built up from cross timbers which form a base for the walls, a water cock for admitting water into the hollow interior, a suitable filling for the interior and a top formed of concrete as hereinafter more particularly explained by the following speclfication.

Figure 1 is a general perspective view of my sea wall partially broken away and in section and in course of construction. Fig. 2, is a cross section through Fig. 1. Fig. 3 1s a longitudinal sectional view throu h Fig. 1. Fig. 4 is a similar view to Fig. 2, o acomplete wa l p In the drawings like letters of reference indicate corresponding arts in each figure.

A is the pontoon w hich is formed by the longitudinal timbers A and A the cross con necting timbers A the supplemental cross timbers A", the flooring A secured beneath the cross timbersA the verticals A connected together by the longitudinal timber A and the truss bars A which are secured to each end of the cross timbers A by bolts A (see Figs. 2 and 4) which have upwardly extending hooked ends for a purpose which will,

hereinafter appear.

A is a curb wall extending all around the pontoon and formed by the sheeting A secured to the lon itudinal timbers A and A and the longitu inal planks A secured by the hooked bolts A B and B are the longitudinal and cross walls formed of concrete suitably reinforced by the steel-truss bars.

D is a filling of stone or any other suitable material such as gravel, sand or clay, .(see

Fig. 4).

E is a water cock secured in one of the outer concrete walls and E are openings formed at the base of 'the cross walls B for *the purpose of allowing the water admitted to one compartment to flow into the adjoinmg compartments.

A is the top formed of concrete.

Having described the principal parts involved in my invention I will briefly describe the method of constructing the same.

The (pontoon A is first completely constructe on land and then floated in sheltered water. The walls B and B are then built up on the longitudinal and cross timbers A, A and A res ectively by any suitable method used for t e building of concrete walls and in courses, the mold F being moved up as the Wall is built. As each layer of the walls areformed, the pontoon gradually sinks a proportionate distance and is ballasted to prevent the same from capsizing. The

ooked ends of the bolts A and A are embedded in the concrete wall as shown thereby securely anchorin the walls to the pontoon. When the Wa s B and B are nearly com leted the pontoon is towed to the place at w ch it is to be sunk. The water cock is then opened to flood the interior of the wall and the structure is thereby sunk into place. If the walls should not sett e evenly and satisfactorily the water may be pum ed out from the interior of the wall to re oat the structure which then may be again sunk. The interior of the Wall 1s then filled with rock, sandnlgravel, or any other suitable filling. It be understood that the to of the wall when sunk will be above the su' ace of the Water and after it is sunk the final layer of concrete and the concrete top is built.

From the description it will be seen that I have invented a sea wall which is simple in structure and which may be built in any sheltered Water desirable and when near completion may be floated to the desired place and sunk.

What I claim as my invention is:

'1. A concrete sea wall comprising a base of box form and suitably trussed, concrete walls built upon the aforesaid base and a suitable fillinfor the interior as and for the purpose spec' ed.

2. A concrete sea wall comprising a base formed of longitudinal and cross timbers suitabl .trussed, a suitable'bottom secured beneat the timbers,c0ncretewalls builtu on the longitudinal and cross timbers and a suitable fillin for theinterior, as and for the purpose speci ed. I

3. In combmatlon a buoyant base formed of longitudinal and cross timbers suitabl trusse a suitable bottom secured beneath the cross timbers, concrete'walls built upon the longitudinal and cross timbers and means for sinking said base as and for the purpose specified. A 4. A concrete sea, wall comprising a pontoon base formed of longitudinal and cross timbers suitably trussed, a suitable bottom secured to and beneath the cross timbers, side and end walls built upon'th'e longitudinal and end cross timbers and cross connecting walls built up on intermediate cross tinibers and a suitable filling and top to the wall as and for the purpose s ecified.

5. In combinatlon a uoyant base formed of ion 'tudinal and cross timbers suitably trusse a suitable bottom secured to and beneath the cross timbers, side and end walls built up on the longitudinal and end cross timbers, cross connecting walls having open- SIS-1,966

ings extending through the wall in proximity to the base and means for admitting water through one of the outer walls as and for the purpose specified.

In a concrete sea wall, a base comprising the side longitudinal timbers, the cross connectin timbers, a flooring secured to and beneath the cross timbers uprights secured centrally of the cross timbers, a ongitudinal timberbrid gtheuprights, and cross trusses secured to iii outer ends of the cross timbers and extending over the longitudinal bridge timbers as and for the purpose specified.

' 7. The method of constructing a sea wall comprising the building of a pontoon on land, the floating of the same in a sheltered place, building concrete walls in the outer ed e of the pontoon, flooding the structure to sidlr the same, filling the interior with a suitable fillin and completing the upper portion of the Wa after the structure is sunk, as and for the purpose specified.

, JESSE HERLIN TROMANHAUSER. -W1tnesses:

B. BOYD, R. COBAIN 

